When an object rolls over a surface, what type of force is acting on it?

Answer:

Rolling Friction is the force

Answer:

Rolling friction

Explanation:

this is a friction that acts on objects when they are rolling over a surface.

Scientists conducted an experiment to show whether the ability to see an object affects a person's idea of the mass of the object. They used the following procedure: Obtain two cardboard boxes of different sizes. Place rocks in each box so that both boxes have the same mass. Close each box and tie a string to it so that participants lift each box using the string. Blindfold half of the participants in the experiment. Ask participants to lift each box using the string and report which one they think has more mass. Record results. The table shows the results of the experiment

1. List at least two ways that you and your family currently limit the amount of energy that you use.

2. Then list at least five ways that you might further reduce your energy usage, even if it means some personal sacrifices.

An object is floating in the water, as shown in the picture below.

Describe the movement of the floating object as a wave passes by, and explain why the object is not carried forward with each wave.

Your answer should include at least two complete sentences.

In a group of dogs, some individuals have short fur and others have long fur. In this gropp,
the gene for the fur length trait has two alleles. The allele F is for short fur, and the allele fis
for long fur.
Marley, a dog from this group, has long fur. Marley has two alleles for long fur.
Based on this information, what is Marley's phenotype for the fur length trait?
FF
FI
short fur
long fur

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Is there Precipitation in Morris County? How do you know?

i give points crown and best answer

For this assignment, you will develop several models that show how light waves and mechanical waves
are reflected, absorbed, or transmitted through various materials. For each model, you will write a brief
description of the interaction between the wave and the material. You will also compose two typewritten
paragraphs. The first will compare and contrast light waves interacting with different materials. The
second will explain why materials with certain properties are well suited for particular functions.

Can someone help please!

The sun appears larger than other visible stars because it is ______ than they are.

A lamp has been on for several hours, and its lampshade begins to feel warm. What causes this to happen?

An ecosystem is all the populations of organisms that live together and
A. the physical factors with which they interact
B. the organisms that generate energy from sunlight
C. the microorganisms that depend on them
D. the food that they take in as energy

Lab: Dichotomous Keys

Which of the following BEST matches the definition of interdependence?

What does it mean when there is a chemical change?
There is a change in the size or shape of an object
One substance has changed into another
A solid changes into a chemical
A liquid changes into a gas

Design an investigation that supports the claim that an increase in voltage OR an increase in the number of coils in an electromagnet, has an affect on the strength of the electromagnet. Be sure to include:

1. Problem/Question

2. Possible Data Table/Chart

3. Conclusion paragraph including data AND the effect of the increase in voltage or number of coils.

The diagram below shows different waves.

By counting the number of crests that pass by a given point in a set amount of time, what you would be calculating?

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What does it mean if others get results that are consistent with yours?
a) The result would disagree
b) The result would agree
c) The result would be inconclusive
d) The result would be inaccurate

The Hertzsprung-Russell diagram below shows the relationships among stars based on color, brightness, and surface temperature.

Using the diagram, how should you classify a star with the brightness of 100,000 suns and a surface temperature of about 3,000 degrees Kelvin (K)?

Explain Neil Bohr's Atomic Model
Headings Are Mandatory In Your Answers

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Match each description of how a light wave interacts with matter with the correct definition.

Which form of precipitation falls from the sky as solid flakes?

Hail
Rain
Sleet
Snow

(NEED ANSWER QUICK!)

Remember that c is always about 300,000 km/s. Use the formula you identified to explain how the two factors in the formula are related on the electromagnetic spectrum.

Nitrogen is a diatomic element with five valence electrons. Create a model of a molecule of nitrogen.

Why are some deer able to jump higher and run faster than other deer?

Answer
A
They train by running and jumping every day.

B
They inherit physical genetic traits that enable that ability.

C
All deer have the same abilities; the lucky ones survive.

D
Some deer try harder than the deer that are lazier

Jupiter is much more massive than Earth. Which of the following would be true?

A bat wing is more similar in anatomical structure to a cat forelimb than to a bird wing. Answer the following questions about these structures.

Which pairs are homologous structures?


Which pairs are analogous structures?


Based on this, do you think a bat is more closely related to a cat or a bird? Explain your answer.

Give one reason why trees are considered living things.